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Title: Method and apparatus for generating differential quadrature phase shifting keying code optical signal
Other Titles: 一种产生差分正交相移键控码光信号的方法及装置
Authors: Xu, X 
Lu, C 
Issue Date: 21-Sep-2011
Source: 中国专利 ZL 200810009197.X How to cite?
Abstract: The invention discloses a method and a device for producing a differential quadrature phase-shift keying code optical signal, which belong to the field of communication. The method comprises the steps of: performing light-splitting processing on an optical signal to obtain two polarized light signals; performing modulation and phase-shift processing on one of the polarized light signals to obtaina polarized light signal after the phase shift, and modulating the other polarized light signal to obtain another polarized modulated light signal; performing light combination processing on the polarized light signal after the phase shift and another polarized modulated light signal to obtain a polarization-multiplexed optical signal; and performing polarization processing on the polarization-multiplexed optical signal to obtain the differential quadrature phase-shift keying code optical signal. The device comprises a polarization light splitter, a modulator, a phase-shift controller, a polarization light combiner and a polarizer. The method and the device can steadily produce the differential quadrature phase-shift keying code optical signal through light-splitting processing, modulation and phase-shift processing, light combination processing and polarization processing.
Rights: Assignee: 华为技术有限公司
Assignee: 香港理工大学
Appears in Collections:Patent

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